JPH0516909Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a system in which an upper handling cylinder case with a handling cylinder inside is pivoted to be vertically swingable about a swing axis with respect to a lower handling cylinder case. A threshing device which is attached to a swinging arm so as to be able to swing upwardly and open, and in which an output transmission section at the swing axis position and an input transmission section at the handling barrel axis are transmission connected by a belt transmission mechanism. It relates to the transmission structure of the device.

[Conventional technology]

Conventionally, in the transmission structure of this type of threshing device, the output transmission part at the swing axis position and the input transmission part at the handling cylinder axis position were simply transmitted by a belt (for example, in practice Publication No. 56-55339).

[Problem that the invention attempts to solve]

In this case, a belt tension mechanism for the belt is not provided, nor is it specifically specified in the drawings, and no measures are taken to prevent the belt from loosening with long-term use. Moreover, since the belt also swings up and down along with the handling cylinder case, the arrangement of the belt with respect to the belt becomes a problem when a belt tension mechanism is provided.

An object of the present invention is to provide a highly durable tension mechanism by adding a belt tension mechanism and arranging it in a rational manner.

[Means for solving problems]

The characteristic configuration of the present invention is that the belt tension mechanism for the belt transmission mechanism is configured to swing integrally with the handling trunk case, and the tension pulley support arm of the belt tension mechanism is connected to the swing arm. It is pivoted so that it can swing freely, and its functions and effects are as follows.

[Effect]

(b) From the characteristic configuration, even when the upper handling trunk case is in the swing open state, the belt tension mechanism is acting on the belt, so for example, the belt tension mechanism does not work and the belt becomes loose. It is possible to avoid accidents if the handling trunk case comes off the pulley when vertically swinging.

(b) Furthermore, due to the characteristic configuration, the tension pulley support arm is pivoted to the swing arm, which is formed with high strength to support the upper handling trunk case, thereby making the pivot structure strong. It can be made into something.

[Effect of idea]

Due to the effect (a), compared to the case where the belt tension mechanism is provided on the fixed side, there is no need to provide a mechanism to prevent the belt from falling off the pulley due to loosening caused by vertical swinging of the handling trunk case, and As a result of operation (b), by attaching to a swinging arm with high strength, there is no need to newly provide a reinforcing plate or the like, compared to when attaching to a relatively low-strength upper handling trunk case.

〔Example〕

The transmission structure of a threshing device mounted on a combine harvester etc. will be explained.

The upper handling cylinder case 2 with the handling cylinder 1 installed therein is attached to a swinging arm 4 which is pivotally supported to be vertically swingable about the swing axis X with respect to the lower handling cylinder case 3, and the It is configured to be able to swing upwards and open freely around X.

An alligator-shaped grain culm inlet 5 is provided on the front side of the upper and lower handling barrel cases 2 and 3 at the joint portion of the upper and lower handling barrel cases 2 and 3, and an alligator-shaped grain culm inlet 5 is provided above the grain culm inlet 5. , a hook 7 is provided which engages with a fixing pin 6 on the side of the lower barrel case 3 to maintain the closed state of the upper barrel case 2, and this hook 7 is actuated by a helical spring (not shown). While being biased, it is released by a handle 8 provided at the left lateral end of the handling trunk case 2. Above this hook 7, a gas spring 9 is installed across the upper and lower handling trunk cases 2 and 3, and the upper handling trunk case 2 is always connected to the upper handling trunk case 2.
It has a function of supporting the handling trunk case 2 in the upward swinging open state by urging it upward.

Next, the transmission structure will be explained. The first transmission shaft 2 is located at the pivot axis X position on the right side end of the lower handling trunk case 3.
4, and a second transmission shaft 25 for transmitting engine power to the first transmission shaft 24 via the bevel gear transmission mechanism 10.
An input pulley 11 is attached to the tip of the transmission shaft 25.

The output pulley 12 is attached to the front side of the upper and lower handling cylinder cases 2 and 3 on the first transmission shaft 24 to constitute the output transmission part A, and the input pulley 14 is attached to the tip of the input shaft 13 at the handling cylinder axis Y position. These pulleys 12 and 14 are connected together by a belt 15 to form a belt transmission mechanism 21.

On the other hand, on the swing arm 4, a support arm 17 of a bell crank type tension pulley 16 is pivotally supported on a support shaft 18 parallel to the swing axis X. A biasing spring 26 is locked at the end. The other end of this spring 26 is connected to the adjustment bolt 1.
It is attached to the upper handling trunk case 2 side bracket 22 via 9.

Above, support arm 17, tension pulley 1
6. Connect the spring 26 etc. to the belt tension mechanism 2
It is called 3.

[Another example]

Bracket 2 for attaching the biasing spring 26
2 may be attached to the swing arm 4 on which the support arm 17 is pivotally supported.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawing is a front view showing an embodiment of the transmission structure of the threshing device according to the present invention. DESCRIPTION OF SYMBOLS 1... Handling cylinder, 2... Upper handling cylinder case, 3... Lower handling cylinder case, 4... Support arm, 16... Tension pulley, 17... Support arm, 21... Belt transmission mechanism, 23... ...Belt tension mechanism, X...
...Rotating axis center, Y... Handling cylinder axis center, A... Output transmission section, B... Input transmission section.

Claims (1)

[Scope of utility model registration request] The upper handling cylinder case 2 containing the handling cylinder 1 is attached to the swinging arm 4 which is pivotally supported to be vertically swingable about the swing axis X with respect to the lower handling cylinder case 3, and the upper handling cylinder case 2 is opened to swing upward. A transmission structure of a thresher which can be configured freely and in which an output transmission part A at the swing axis X position and an input transmission part B at the handling barrel axis Y are transmission connected by a belt transmission mechanism 21. , belt transmission mechanism 21
The belt tension mechanism 23 is configured to swing integrally with the handling trunk case 2, and the tension pulley 16 support arm 17 of the belt tension mechanism 23 is pivotably pivoted to the swing arm 4. The transmission structure of the supported threshing device.